Related Experiment Video
Updated: Jul 31, 2026
07:09
The Sciatic Nerve Cuffing Model of Neuropathic Pain in Mice
Published on: July 16, 2014
The endogenous cannabinoid system and its role in nociceptive behavior
Benjamin F Cravatt1, Aron H Lichtman
1The Skaggs Institute for Chemical Biology and Department of Cell Biology, The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, California 92037, USA. cravatt@scripps.edu
Journal of Neurobiology
|September 14, 2004
Summary
The endogenous cannabinoid system plays a key role in managing pain. Research shows endocannabinoids modulate responses to various pain types, supporting their regulatory function in nociceptive pathways.
Area of Science:
- Neuroscience
- Pharmacology
- Biochemistry
Background:
- Exogenous cannabinoids are known for analgesic properties.
- This suggests a regulatory role for the endogenous cannabinoid (endocannabinoid) system in pain pathways.
- The endocannabinoid system comprises lipid signaling molecules, enzymes, and G-protein coupled receptors (CB1 and CB2).
Purpose of the Study:
- To review recent studies on the function of the endocannabinoid system in pain sensation.
- To synthesize evidence from genetic, behavioral, and pharmacological investigations.
Main Methods:
- Review of genetic studies.
- Review of behavioral studies.
- Review of pharmacological studies.
Main Results:
- Endocannabinoids are involved in modulating behavioral responses to pain.
- Evidence supports a role in acute pain.
- Evidence supports a role in inflammatory and neuropathic pain.
Conclusions:
- The endocannabinoid system is a significant modulator of pain sensation.
- Further research into this system may yield novel analgesic strategies.
- Endocannabinoids are crucial for regulating nociceptive pathways.
Related Concept Videos
01:44Nociception
Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain. Thus, pain helps the...
02:26NF-κB-dependent Signaling Pathway
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
01:22Opioid Receptors: Overview
Opioid receptors, including the mu (μ, MOR), delta (δ, DOR), and kappa (κ, KOR) types, belong to the rhodopsin family of G protein-coupled receptors. These receptors are located throughout the central and peripheral nervous systems and in non-neuronal tissues such as macrophages and astrocytes. Opioid receptor ligands can be categorized into agonists or antagonists. Highly selective agonists include [d-Ala2, MePhe4, Gly(ol)5]-enkephalin or DAMGO for MOR, [D-Pen2, D-Pen5]-enkephalin or DPDPE for...
01:25Analgesia and Pain Management
Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
01:21Chemotherapy-Induced Nausea and Vomiting: Cannabinoids
Tetrahydrocannabinol (THC) is a phytocannabinoid that primarily interacts with the CB1 receptor, a type of G protein-coupled receptor (GPCR) predominantly in and around the chemoreceptor trigger zone (CTZ) and emetic center. THC also blocks the serotonin receptor activity in the dorsal vagal complex (DVC) by inhibiting serotonin release. THC exerts its anti-emetic effects through these interactions, which are beneficial for patients undergoing chemotherapy.
Two synthetic agonists of THC,...
Two synthetic agonists of THC,...
01:20Pain
Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...